CN108691736A - A kind of big stroke isolation plunger pump of pulse free - Google Patents
A kind of big stroke isolation plunger pump of pulse free Download PDFInfo
- Publication number
- CN108691736A CN108691736A CN201810442077.2A CN201810442077A CN108691736A CN 108691736 A CN108691736 A CN 108691736A CN 201810442077 A CN201810442077 A CN 201810442077A CN 108691736 A CN108691736 A CN 108691736A
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- China
- Prior art keywords
- plunger
- plunger pump
- rack
- gear
- cylinder body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention belongs to plunger pump technique fields, disclose a kind of big stroke isolation plunger pump of pulse free, for solving the problems, such as existing plunger pump due to realizing that extremely difficult and pulsation is big using huge discharge caused by toggle, big stroke plunger pump.The present invention includes having multiple plunger pump cylinder bodies, each plunger pump cylinder body is equipped with plunger, two adjacent plungers are slided in plunger pump cylinder body respectively using the drive of set of gears rackwork, the rack and pinion mechanism includes the gear-box being mounted on a plunger, it is respectively arranged with the first rack on two opposite side walls inside gear-box, the inside of gear-box is equipped with the sector gear that rotation is driven by external driving device, sector gear is intermeshed with two the first racks inside gear-box, and the second rack is provided on the outer wall of gear-box;It is provided with third rack on adjacent another plunger, is cooperated by intermediate drive gear between the second rack and third rack.
Description
Technical field
The invention belongs to plunger pump technique fields, and in particular to a kind of big stroke isolation plunger pump of pulse free.
Background technology
Plunger pump is an important device of hydraulic system, it is moved back and forth by plunger in cylinder body, makes seal operation
Volume changes to realize oil suction, pressure oil.Plunger pump is high, compact-sized with rated pressure, effect is high and flow-rate adjustment side
Just the advantages that.Therefore, plunger pump is widely used in the occasion that high pressure, big flow and flow needs are adjusted, such as hydraulic press, engineering
In machinery and ship.
Plunger pump is to be easy efficiency highest pump, but be limited by and to be formed depending on toggle, plunger pump stroke by
Limit, so that the realization of huge discharge, big stroke plunger pump is extremely difficult;And in plunger pump motion process between plunger and cylinder sleeve
The periodical lateral pressure that toggle passes over is born, therefore needs good lubrication between plunger and cylinder sleeve;
Due to toggle inherent characteristic, when crank at the uniform velocity inputs, connecting rod exports-i.e. discharge capacity in the displacement of cylinder axis direction, in just
String wave changes, therefore output ripple is big;Simultaneously fluid is pumped in order to reduce by being let out in gap between plunger and cylinder sleeve, often
Using the contact ring packing of the forms such as piston ring, Glais ring, these sealings considerably increase frictional force and abrasion.
Invention content
The present invention is in order to solve existing plunger pump due to using huge discharge, big stroke plunger pump caused by toggle
It realizes problem extremely difficult and that pulsation is big, and a kind of big stroke isolation plunger pump of pulse free is provided, remaining plunger pump
Except free advantage itself, the production and manufacture of big stroke, huge discharge plunger pump can be realized;Enable plunger real simultaneously
Existing linear movement solves the problems, such as discharge capacity pulsation and pressure fluctuation, and eliminates plunger to the lateral force of cylinder sleeve plus adopting
It is sealed with non-contact type, solves the problems, such as lubrication, heat dissipation and contact and the skimming wear between plunger and cylinder sleeve.
To solve technical problem, the technical solution adopted in the present invention is:
A kind of big stroke isolation plunger pump of pulse free, including with multiple plunger pump cylinder bodies, each plunger pump cylinder body is equal
It is equipped with plunger, which is characterized in that two adjacent plungers are driven using set of gears rackwork respectively in plunger pump cylinder body
Interior sliding, the rack and pinion mechanism include the gear-box being mounted on a plunger, two opposite side walls inside gear-box
On be respectively arranged with the first rack, the inside of gear-box is equipped with the sector gear that rotation is driven by external driving device, fan
Shape gear is intermeshed with two the first racks inside gear-box, and the second rack is provided on the outer wall of gear-box;Adjacent
It is provided with third rack on another plunger, is cooperated by intermediate drive gear between the second rack and third rack.
Preferably, the upper end of each plunger is equipped with straight-line guidance bearing, is carried out to plunger by straight-line guidance bearing
Guiding role ensures that plunger moves along a straight line in plunger pump cylinder body.
Preferably, the upper and lower ends of first rack are both provided with flexible tooth, and the flexible tooth offers stiffness tuning
Slot and the stiffness tuning hole being interconnected with stiffness tuning slot.
Preferably, the lower end of each plunger is mounted on damping energy storage equipment, and the damping energy storage equipment includes opening up
Energy storage chamber in plunger, energy storage chamber are internally provided with spring energy storage device, the jet stream being connected to energy storage chamber are offered on plunger
Channel, be equipped with that the liquid for absorbing energy storage chamber is discharged in plunger pump cylinder body in the bottom plunger of energy storage chamber unidirectional overflows
Flow valve.
There is the gap (damping circumferential weld) being connected to fluidic channel between the outer wall of the plunger and plunger pump cylinder body, lean on
Separation partition board is installed in the fluidic channel of nearly plunger pump cylinder body inner wall side, detaches partition board by fluidic channel, plunger and plunger pump
Gap between cylinder body is divided into feed liquor fluidic channel and drain fluidic channel, outside the fluidic channel of close plunger pump cylinder body side
It is opened up on the plunger enclosed fluted.
There is the gap being connected to fluidic channel, the internal diameter of fluidic channel between the outer wall of the plunger and plunger pump cylinder body
Gradually increase along the direction from energy storage chamber to plunger outer wall, is offered on plunger for inputting the liquid in plunger pump cylinder body
Feed pathway in fluidic channel.
The epimere of plunger pump cylinder body offers spout hole.
Compared with prior art, the invention has the advantages that:
The big stroke isolation plunger pump of pulse free of the present invention, plunger are driven by rack and pinion mechanism in plunger pump cylinder body
Movement is moved by uniform rectilinear of the external driving device with carry-over bar, to ensure that output displacement is linear pulse free,
It solves the problems, such as to drive plunger motion using toggle in the prior art and existing discharge capacity is pulsed and pressure fluctuation.
The structure design of rack-and-pinion to be no longer influenced by limitation relative to toggle formula plunger pump stroke simultaneously, convenient for manufacture
Go out big stroke, huge discharge plunger pump.
The rack and pinion mechanism of the present invention in use, passes through the first rack, the knot of the second rack and third rack
Structure design so that the present invention can ensure two adjacent plungers be respectively at different working conditions (ram compression, one
A reset) so that two adjacent plunger pump cylinder bodies are respectively at the working condition of pressure journey and suction, compared with the prior art,
It can ensure the steady of plunger pump operation, be capable of providing highest transmission efficiency rate;Use complexity compared with the prior art simultaneously
Crank axle (or more set crank link structures) mode, reduce the complexity and manufacturing cost of structure.
The present invention eliminates the lateral force that toggle is brought, to make due to using rack and pinion mechanism simultaneously
It obtains plunger frictional resistance to decline to a great extent, to improve the plunger efficiency of pump;And due to the reduction of frictional resistance, it is not necessarily to mating setting
Cooling system, to be further simplified the overall structure of plunger pump.
The design by flexible tooth of the present invention, the first rack of gear-box side is detached from not yet to be engaged with sector gear
When, other side rack has been enter into engagement, with ensure to commutate hour rack can correct engagement, both sides rack engages section to nibble simultaneously
Close overlay region.Since rack engagement in the overlay region sides Zong You is in on-position, the other side is in driving condition, passes through flexible tooth
Design, pass through dead point using plunger inertia motion, sector gear and the first rack nibbles when ensuring that commutation in this way
Conjunction state.It solves rack and pinion mechanism in the prior art and has ensured plunger pump there is the technical barrier at dead point when commutation
The case where pulsing further is eliminated in even running.
The damping energy storage equipment of the present invention so that the sealing structure without seal is realized between plunger and plunger pump cylinder body,
After high-pressure fluid is by the gap throttling between plunger and plunger pump cylinder body, and compression is absorbed by the accumulator of pressure area between passing through
The flow of gap so that gap can generate big pressure difference between shorter plunger and plunger pump cylinder body, and then forms high densification
Envelope.Due to using touchless sealing;When energy storage pressure is higher than in-cylinder pressure, one-way overflow valve is opened by partially liq
Discharge, accumulator restore energy storage capability, thus form a complete working cycles.Contact seal compared with prior art
(such as contact ring packing of piston ring, Glais ring form), not only greatly reduces friction, while can support higher
Piston movement speed and longer service life, and friction loss caused by reducing seal, improve the operation of system
Efficiency.
The fluidic channel of the present invention, the design for detaching partition board and groove make it possible to form a dynamic and static pressure liquid film carrying
Area can either realize the support to plunger, while also ensure that generating high pressure forms non-contact type sealing, eliminates in the prior art
Contact the friction of band.
The structure change of the internal diameter of the fluidic channel of the present invention and the structure design of feed pathway, can equally realize
Support and sealing to plunger, while static pressure can also be formed and support the position that can ajust plunger automatically, to prevent plunger
Occur the contact with plunger pump cylinder body during high-speed motion, and then reduces friction and wear.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structural schematic diagram of the damping energy storage equipment of the present invention;
Fig. 3 is the partial enlarged view schematic diagram that A goes out in Fig. 1;
Fig. 4 is the structural schematic diagram of another embodiment of the fluidic channel of the present invention;
Fig. 5 is the structural schematic diagram of the flexible tooth of the present invention;
Fig. 6 is the connection diagram of the sector gear and driving device of the present invention;
It is marked in figure:1, plunger pump cylinder body, 2, plunger, 3, gear-box, the 31, first rack, 32, sector gear, 33, second
Rack, 34, intermediate drive gear, 35, third rack, 36, dynamic balance wheel, 37, flexible tooth, 38, straight-line guidance bearing, 39, just
Spend regulating tank, 310, stiffness tuning hole, 311, driving device, 312, flywheel, 4, damping energy storage equipment, 41, energy storage chamber, 42, bullet
Property accumulator, 43, one-way overflow valve, 44, fluidic channel, 45, separation partition board, 46, feed liquor fluidic channel, 47, drain jet stream it is logical
Road, 48, groove, 49, dynamic and static pressure liquid film supporting region, 410, feed pathway, 5, spout hole, 6, dust-proof sealing gland.
Specific implementation mode
With reference to embodiment, the invention will be further described, and described embodiment is only a present invention part
Embodiment is not whole embodiment.Based on the embodiments of the present invention, those skilled in the art are not making
Other embodiments used obtained under the premise of creative work, belong to protection scope of the present invention.
In conjunction with attached drawing 1-6, the big stroke isolation plunger pump of pulse free of the invention, including with multiple plunger pump cylinder bodies 1,
Each plunger pump cylinder body 1 is equipped with plunger 2, two adjacent plungers 2 are existed respectively using the drive of set of gears rackwork
Sliding in plunger pump cylinder body 1, the rack and pinion mechanism include the gear-box 3 being mounted on a plunger, and two inside gear-box 3
The first rack 31 is respectively arranged on a opposite side wall, the inside of gear-box 3 is equipped with to be driven by external driving device 311
The sector gear 32 of rotation, wherein driving device belong to prior art products, and those skilled in the art can be appreciated and understood that,
Details are not described herein, and the output end of driving device 311 is connected with flywheel 312, and flywheel 312 drives sector gear 32 to rotate, as
A kind of preferred mode of the present invention, sector gear 32 are equipped with thrust bearing, are produced by thrust bearing to balance sector gear 32
The eccentric force of raw 2 axis of opposite plunger, and then eliminate lateral force;Sector gear 32 and two the first teeth inside gear-box 3
Item 31 is intermeshed, and the second rack 33 is provided on the outer wall of gear-box 3;It is provided with third rack on adjacent another plunger 2
35, it is cooperated by intermediate drive gear 34 between the second rack 33 and third rack 35, i other words intermediate drive gear 34
Both sides be intermeshed respectively with the second rack 33 and third rack 35, as a kind of preferred mode of the present invention, be provided with the
The plunger 2 of three racks 35 is equipped with dynamic balance wheel 36, i other words dynamic balance wheel 36 and third rack 35 are located at the two of plunger 2
Side is further ensured that the stress balance of plunger by 36 band of dynamic balance wheel.
The big stroke isolation plunger pump of pulse free of the present invention, plunger are driven by rack and pinion mechanism in plunger pump cylinder body
Movement is moved by uniform rectilinear of the external driving device with carry-over bar, to ensure that output displacement is linear pulse free,
It solves the problems, such as to drive plunger motion using toggle in the prior art and existing discharge capacity is pulsed and pressure fluctuation.
The structure design of rack-and-pinion to be no longer influenced by limitation relative to toggle formula plunger pump stroke simultaneously, convenient for manufacture
Go out big stroke, huge discharge plunger pump.
The rack and pinion mechanism of the present invention in use, passes through the first rack, the knot of the second rack and third rack
Structure design so that the present invention can ensure two adjacent plungers be respectively at different working conditions (ram compression, one
A reset) so that two adjacent plunger pump cylinder bodies are respectively at the working condition of pressure journey and suction, compared with the prior art,
It can ensure the steady of plunger pump operation, be capable of providing highest transmission efficiency rate;Use complexity compared with the prior art simultaneously
Crank axle (or more set crank link structures) mode, reduce the complexity and manufacturing cost of structure.
The present invention eliminates the lateral force that toggle is brought, to make due to using rack and pinion mechanism simultaneously
It obtains plunger frictional resistance to decline to a great extent, to improve the plunger efficiency of pump;And due to the reduction of frictional resistance, it is not necessarily to mating setting
Cooling system, to be further simplified the overall structure of plunger pump.
Preferably, the upper end of each plunger 2 is equipped with straight-line guidance bearing 38, by straight-line guidance bearing 38 to plunger
2 carry out guiding role, ensure that plunger moves along a straight line in plunger pump cylinder body.
Preferably, the upper and lower ends of first rack 31 are both provided with flexible tooth 37, and the flexible tooth 37 offers just
The stiffness tuning hole 310 spent regulating tank 39 and be interconnected with stiffness tuning slot 39.The design by flexible tooth 37 of the present invention,
When first rack of gear-box side is engaged there are no disengaging with sector gear, other side rack has been enter into engagement, to ensure to change
To hour rack can correct engagement, both sides rack engage simultaneously section be engagement overlay region.Due to the overlay region sides Zong You rack
Engagement is in on-position, and the other side is in driving condition, by the design of flexible tooth, is passed through using plunger inertia motion
Dead point, the meshing state of sector gear and the first rack when ensuring that commutation in this way.Solves rack-and-pinion in the prior art
Mechanism has ensured the even running of plunger pump there is the technical barrier at dead point when commutation, further eliminates the case where pulsing.
In conjunction with attached drawing 2, the lower end of each plunger 2 is mounted on damping energy storage equipment 4, and the damping energy storage equipment 4 wraps
The energy storage chamber 41 being opened in plunger 2 is included, energy storage chamber 41 is internally provided with spring energy storage device 42, offers and store on plunger 2
Can the fluidic channel 44 that is connected to of chamber 41, the liquid row for absorbing energy storage chamber 41 is installed in the bottom plunger 2 of energy storage chamber 41
Going out to the one-way overflow valve 13 in plunger pump cylinder body 1, wherein spring energy storage device and one-way overflow valve belongs to prior art products, this
The technical staff in field can be appreciated and understood that details are not described herein.
In conjunction with attached drawing 3, there is the gap being connected to fluidic channel 44 between the outer wall and plunger pump cylinder body 1 of the plunger 2
(damping circumferential weld), is equipped with separation partition board 45 in the fluidic channel 44 of 1 inner wall side of plunger pump cylinder body, and separation partition board 45 will
Gap between fluidic channel 44, plunger 2 and plunger pump cylinder body 1 is divided into feed liquor fluidic channel 46 and drain fluidic channel 47,
Fluted 48 are opened up on the plunger 2 of the periphery of the fluidic channel 44 of 1 side of plunger pump cylinder body, fluidic channel of the invention is divided
Design from partition board and groove makes it possible to form a dynamic and static pressure liquid film supporting region 49, can either realize the support to plunger,
Also ensure that generating high pressure forms non-contact type sealing, eliminates the friction for contacting band in the prior art simultaneously.
In conjunction with attached drawing 4, the column has the gap being connected to fluidic channel, penetrates between 2 outer wall and plunger pump cylinder body 1
The internal diameter of circulation road 44 gradually increases along from energy storage chamber 41 to the direction of 2 outer wall of plunger, is offered on plunger 2 for by plunger
Liquid in pump cylinder 1 is input to the feed pathway 410 in fluidic channel 44, and the structure of the internal diameter of fluidic channel of the invention becomes
The structure design of change and feed pathway, can equally realize the support and sealing to plunger, while can also form static pressure branch
Support can ajust the position of plunger automatically, to prevent plunger from occurring connecing with plunger pump cylinder body during high-speed motion
It touches, and then further decreases friction and wear.
As a kind of preferred mode of the present invention, the epimere of plunger pump cylinder body 1 offers spout hole 5, will by spout hole 5
Liquid flows back.
As a kind of preferred mode of the present invention, the upper end of plunger pump cylinder body 1 is provided with plunger 2 mutually so that anti-dust and gas
Envelope 6, the sealing function between plunger and plunger pump cylinder body 1 is realized by dust-proof sealing gland 6.
Claims (6)
1. a kind of big stroke isolation plunger pump of pulse free, including with multiple plunger pump cylinder bodies (1), each plunger pump cylinder body is equal
It is equipped with plunger (2), which is characterized in that two adjacent plungers are driven using set of gears rackwork respectively in plunger pumping cylinder
Sliding in vivo, the rack and pinion mechanism include the gear-box (3) being mounted on a plunger, and two inside gear-box are opposite
The first rack (31) is respectively arranged on side wall, the inside of gear-box is equipped with the sector that rotation is driven by external driving device
Gear (32), sector gear (32) are intermeshed with two the first racks inside gear-box, are provided on the outer wall of gear-box
Second rack (33);Third rack (35) is provided on adjacent another plunger, in passing through between the second rack and third rack
Between transmission gear (34) cooperate.
2. the big stroke isolation plunger pump of pulse free according to claim 1, which is characterized in that match the upper end of each plunger
Equipped with straight-line guidance bearing (38).
3. the big stroke isolation plunger pump of pulse free according to claim 1, which is characterized in that above and below first rack
Both ends are both provided with flexible tooth (37), and the flexible tooth offers stiffness tuning slot (39) and is interconnected with stiffness tuning slot
Stiffness tuning hole (310).
4. the big stroke isolation plunger pump of pulse free according to claim 1, which is characterized in that under each plunger (2)
End is mounted on damping energy storage equipment (4), and the damping energy storage equipment includes the energy storage chamber (41) being opened in plunger, energy storage chamber
Be internally provided with spring energy storage device (42), the fluidic channel (44) being connected to energy storage chamber is offered on plunger (2), energy storage chamber
The one-way overflow valve (43) that liquid for absorbing energy storage chamber is discharged in plunger pump cylinder body is installed in bottom plunger.
5. the big stroke isolation plunger pump of pulse free according to claim 4, which is characterized in that the outer wall of the plunger (2)
There is the gap being connected to fluidic channel between plunger pump cylinder body (1), the fluidic channel close to plunger pump cylinder body (1) inner wall side
(44) separation partition board (45) is installed, separation partition board (45) divides the gap between fluidic channel, plunger and plunger pump cylinder body in
It is cut into feed liquor fluidic channel (46) and drain fluidic channel (47), outside the fluidic channel (44) of close plunger pump cylinder body (1) side
It is opened up on the plunger enclosed fluted (48).
6. the big stroke isolation plunger pump of pulse free according to claim 4, which is characterized in that the outer wall and column of the plunger
There is the gap being connected to fluidic channel between plug pump cylinder, the internal diameter of fluidic channel (44) is along from energy storage chamber to plunger outer wall
Direction gradually increase, offered on plunger (2) for the liquid in plunger pump cylinder body to be input in fluidic channel (44)
Feed pathway (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442077.2A CN108691736B (en) | 2018-05-10 | 2018-05-10 | A kind of big stroke isolation plunger pump of pulse free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442077.2A CN108691736B (en) | 2018-05-10 | 2018-05-10 | A kind of big stroke isolation plunger pump of pulse free |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108691736A true CN108691736A (en) | 2018-10-23 |
| CN108691736B CN108691736B (en) | 2019-08-20 |
Family
ID=63846141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810442077.2A Expired - Fee Related CN108691736B (en) | 2018-05-10 | 2018-05-10 | A kind of big stroke isolation plunger pump of pulse free |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108691736B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332592A (en) * | 2021-06-04 | 2021-09-03 | 丰凯医疗器械（上海）有限公司 | Catheter pump assembly |
| CN115845247A (en) * | 2022-12-20 | 2023-03-28 | 上海炫脉医疗科技有限公司 | Cleaning system capable of continuously flushing blood pump |
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|---|---|---|---|---|
| JP2015086855A (en) * | 2013-09-27 | 2015-05-07 | 株式会社ケイセブン | Plunger pump |
| US20150233368A1 (en) * | 2014-02-18 | 2015-08-20 | Level Best Technologies Ltd. | Rack and Pinion Driven Gas Compressor |
| CN106762500A (en) * | 2016-12-30 | 2017-05-31 | 北京工业大学 | A kind of horizontal three cylinder plugs reciprocating pump of rack pinion |
| CN107387355A (en) * | 2017-09-01 | 2017-11-24 | 西南石油大学 | Tooth fans rack-and-pinion reciprocating pump |
| CN108506184A (en) * | 2018-05-03 | 2018-09-07 | 四川省机械研究设计院 | A kind of big stroke plunger pump of pulse free |
-
2018
- 2018-05-10 CN CN201810442077.2A patent/CN108691736B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015086855A (en) * | 2013-09-27 | 2015-05-07 | 株式会社ケイセブン | Plunger pump |
| US20150233368A1 (en) * | 2014-02-18 | 2015-08-20 | Level Best Technologies Ltd. | Rack and Pinion Driven Gas Compressor |
| CN106762500A (en) * | 2016-12-30 | 2017-05-31 | 北京工业大学 | A kind of horizontal three cylinder plugs reciprocating pump of rack pinion |
| CN107387355A (en) * | 2017-09-01 | 2017-11-24 | 西南石油大学 | Tooth fans rack-and-pinion reciprocating pump |
| CN108506184A (en) * | 2018-05-03 | 2018-09-07 | 四川省机械研究设计院 | A kind of big stroke plunger pump of pulse free |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332592A (en) * | 2021-06-04 | 2021-09-03 | 丰凯医疗器械（上海）有限公司 | Catheter pump assembly |
| CN115845247A (en) * | 2022-12-20 | 2023-03-28 | 上海炫脉医疗科技有限公司 | Cleaning system capable of continuously flushing blood pump |
| WO2024131263A1 (en) * | 2022-12-20 | 2024-06-27 | 上海炫脉医疗科技有限公司 | Cleaning system capable of continuously flushing blood pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108691736B (en) | 2019-08-20 |
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